DRIFT PHENOMENA IN THE VICINITY OF DEVIL'S 

 LAKE AND BARABOO, WISCONSIN.^ 



The study of the drift about Devil's Lake and Baraboo, Wis- 

 consin, has brought out facts and relations of more than local 

 interest, which it is the aim of this paper to state. 



Location. — The region is in the central part of the southern 

 half of the state, about thirt3^-five miles northwest of Madison, 

 and on the western limit of the area covered by the Green Bay 

 lobe of the last great ice-sheet — the ice-sheet which deposited 

 the Wisconsin drift. Since the ice of this epoch advanced as 

 far to the west in this region as that of any earlier epoch, the 

 region concerned is also on the border between the glaciated 

 country to the east, and the driftless area to the west. 



Ge?ieral topographic relatiofis. — The accompanying map. Fig. 

 I, shows the surroundings of the region especially concerned, 

 and Fig. 2 the topography of a small area about Devil's Lake. 

 Extending in a general east-west direction and rising 500 feet 

 to 800 feet above the surrounding country, is the great Bara- 

 boo quartzite range (shaded area Fig. i) in which Devil's Lake 

 (^) is situated. This range, and especially the larger range 

 to the south, is the most prominent topographic feature of the 

 region, and, as will be seen, had not a little influence on the 

 behavior of the ice at its margin. Devil's Lake divides the 

 range into an eastern and a western portion, known respectively 

 as the east and west bluffs (or ranges). The highest point of 

 the range, about four miles east of the lake, has an altitude of 

 1620 feet. The eastward extension of the west range (see Fig. 



"This paper is based on work done in connection witli[the field course in geology 

 in The University of Chicago. Other students than those whose names appear in 

 connection with this article, had something to do with the development of the facts 

 here set forth. This is especially true of Messrs. H. R. Caraway, E. C. Perisho, D. P. 

 Nicholson, L. Wolff and O. J. Arnold. 



